Automobile brake



Des. 1, 1931. E. D. WARDE AUTOMOBILE BRAKE Filed Dec. 27, 1928 INVENTOR Edgar D Warde,

H15 21 TTORNE Y Patented Dec. 1, 1931 PATENT EDGAR D. WAR-DE, OI ARLINGTON, NEW JERSEY AUTOIOBILE BRAKE Application filed December 87, 1928. Serial No. 828,724.

The invention relates to automobile brakes and particularly to systems where the brakes are simultaneously applied to all four wheels of the car.

It is desirable for reasons of safety and efficiency to have the braking pressure equalized or balanced on. all four wheels. The object of the present invention is to provide such a braking mechanism which is entirely reliable in operation and of an exceedingly simple nature. The novel braking hereinafter disclosed has the further advantage of being use, inexpensive to manufacture and it may be applied to any make of automobile without material alterations if not applied to the car at the point of manufacture.

The invention contem lates an equalizer bar and means for gu-i ing and actuating 2 this ualizer bar. Suitable connections are provi ed between the equalizer bar and the four brakes on the car so that the pressure 1 will be distributed evenly when applied by the actuating means.

Other ob'ects and advantages will appear from the ollowing specification taken in connection with the drawings forming a part thereof and in which one embodiment or arrangement of the invention is illustrated, it

- being understood that this is set forth by way of exam 1e and that the invention may take various orms de ending 11 on the nature and character 0 the vehic e in which the braking mechanism is to be incorporated.

In said drawings: v

Fig. 1 is a so ematic plan view;

Fi 2 is a fragmentary longitudinal sectiona view taken on line 2-2 of Fig. 1; and

Fig. 3 is a cross sectional view taken on line 3-3 of Fig.1.. a The frame of the car is designated bythe reference numerals 5-5. The front wheels are indicated diagrammatically at 6--6 and have mechanical brakes 77 of any well known type. The rear wheels 8-8 also have mechanical brakes 99. As the construction of the wheels and brakes and other parts of the chassis are well known it is not thought necessa that they be illustrated in detail. 5 A roc shaft 10 is suitably journaled in means.

easy to construct, durable in 1 v vention.

' the rear wheel brakes 9. Thus, when the the lower flange of the frame members and angles 16 secured to the webs of the frame members. The draw bar 14 has an car i? extending from its central portion and pivoted at 18 in this car is ,the equalizer barl which is also guided at its ends in the guides The foregoing forms the means tor actuating the equalizer bar-and it will be apparent from an inspection of the drawings that when pressure is applied to the foot pedal 11 it will cause the draw. bar 14 to. move forward without canting. The equalizer bar 19 will also move forward in its guides 15 but b virtue of being pivoted in the middle it is ree to swin one way or the other so as to equalize or ba ance the pressure which is. transmitted to the four brakes in a manner hereinafter described. The herein disclosed actuatin means for the equalizer bar is typical of onfy one example for accomplishing the desired result and it may be wideiy varied without departing. from the spirit of the in" Pivoted at 20 on opposite ends of the equal izer bar 19 are links. 21, these links in turn being pivoted at 22 to levers 23. Pivoted at 24 to the levers 23 are the connections 25 to equalizer bar 19 is moved forward the brakes 9 will be tightened, the pressure on the two brakes being evenly distributed or balanced by virtue of the equalizer bar.

Pivotedat 26.011 the opposite ends of levers 23 are other links 27 which in turn are pivoted at 28 to a second set of levers 29. The levers 29 are pivoted at 30 to the frame members 5. Pivoted at 31 to the levers 29 arose .ponnections32 running to the front wheel.

brakes 7. It will thus be plain from the foregoing description and the drawings that the pressure will be evenly distributed to the front wheel brakes as well as the rear wheel brakes throufgh the medium of the equalizer bar 19 and a oresaid linkage. I

In accordance with the invention the linka e and connections to the front and rear w eel brakes may likewise be widely varied, the essential feature of the invention being to provide an equalizer bar having means for guiding it and means for actuating it and connections to the four wheels whereby the pressure may be equally distributed, in this way avoiding the accurate adjustment of the brakes which is necessary for safety and efficiency. w h

In order that slightly morebraking efi'ect may be-produced in the rear wheels than the front, the width of the rear wheel brake is shown as somewhat greater than that of the front wheel brake. However this might readily be accomplished in other ways such, for instance, as making the springs in the front wheel brakes somewhat stron er than those of the rear wheel brakes or by c an 'ng the position of the pivots or fulcrums 0 the levers 23 or 29. a

In Fig. 1 the parts are shown in the position they would occupy in their normal con-f" dition'or with the bra es not ap lied. After the brakes have been applied. t e arts are again returned to the position of ig. 1 by the ordinary sprin s in the conventional mechanical brakes. associated linkage might be considered as balanced between the springsin the four vbrakes of the car and when the equalizer bar is moved by its actuating mechanism the pres sure must be equalized or evenly distributed to all four wheels. Obviously other means might be employed to bring the brakes to their release position and return the equalizer bar and its associated parts to their normal position.

A plicant-is aware that an equalizer bar has on used to equalize the pressure be tween two of the brakes of a car but he believes it to be new with him to provide a guided equalizer bar which will evenly distribute the pressure to all four brakes of an automotive vehicle.

For economy of illustration some of the parts disclosed in the drawin s, particularl the linkage between the equa izlng bar an the connections to the brakes are somewhat larger in proportion to the other parts than they would be in practice.

Numerous changes may be made in details of construction and arrangements of parts from that disclosed in the embodiment illustrated and all such changes would be considered as coming within the spirit of the invention as set forth in the appended claims.

I claim:

l. A four wheel brake system for auto motive vehicles having in combination, a frame having wheels 1ournaled at opposite ends thereof, brakes controlling the rotation he equalizer bar and its of said wheels and means for equalizing the pressure applied to said brakes, said means including an equalizer bar, actuating means for said e ualizer bar, means for guiding said e ualizer er in a substantially horizontal p ane, links ivoted to said equalizer bar levers ivote to said links, one end of said levers eing connected to the brakes on the rear wheels, links connecting the other ends of said levers to'other levers pivoted on said frame and connections from the opposite ends of said last mentioned levers to the brakes on the front Wheels.

2. A four wheel brake system for automotive vehicles having in combination, a frame having wheels journaled at opposite ends thereof, brakes controlling the rotation of said wheels, connections to said brakes, and means for equalizing the pressure applied to said brakemsaid means including a drawbar, an equalizer bar connected at approximately its central portion to said draw-bar, means for guiding said e ualizer bar and said draw-bar in asubstantia 1 horizontal plane, actuating means for said raw-bar, and linkage between said equalizer bar and said connections to the brakes.

r 3. A four wheel brake system for autoinotive vehicles having in combination, a frame having wheels journaled at opposite ends thereof, brakes controlling the rotation of said wheels, and means for equalizing the pressure applied to said brakes, said means including an e ualizer bar, means for supporting and guiding said equalizer. bar in a substantially horizontal plane, actuatin means for said equalizer bar, links pivoted to said equalizer bar and levers ivoted to said links, one end of said levers eing connected to the brakes on the rear wheels and the other end of said levers being connected by suitable linkage to the brakes on the front wheels.

4. A four wheel brake system for automotive vehicles having in combination, a frame having wheels journaled at opposite ends thereof brakes controlling the rotation of said wheels, and means for equalizing the pressure applied to said brakes, said means including a draw-bar, an equalizer bar connected to said draw-bar, means for support- Hit) nected by linkage to the brakes on the front wheels.

In testimony whereof I afiix my signature.

' EDGAR D. WARDE. 

